Researchers from Turku, Finland, interviewed more than three thousand men - all pairs of male twins and their older or younger brothers - about the first time they had sex. Many participants in the study reported that they had suffered from erectile dysfunction and premature ejaculation at their first sexual encounter.
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Patients with premature ejaculation who used a topical anaesthetic spray were able to delay ejaculation for five times as long, according to a study in the February issue of the urology journal BJU International.
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